Which of the Following Subunits,when Combined,are Orthologs of the Prokaryotic

Question

Which of the following subunits,when combined,are orthologs of the prokaryotic alpha dimer?
A)Rpb2 and rpb3
B)Rpb3 and rpb11
C)Rpb8 and rpb10
D)Rpb9 and rpb10
E)Rpb10 and rpb12

Accepted Answer

Rpb3 and Rpb11 are orthologs of the prokaryotic alpha dimer in eukaryotic RNA polymerase.